1 gill (gi) = 0.5 cup (cup).
Gill (gi) is a unit of Volume used in Standard system.
Cup (cup) is a unit of Volume used in Cooking system.
The US gill, defined as 118.29411825 milliliters = 1/32 US liquid gallon. US customary cup can be abbreviated as c., = 236.5882365 millilitres = 1/16 U.S. customary gallon = 1/4 U.S. customary quart